allow configure to select Qt version * Makefile.am (AM_FFLAGS): Include FPICFLAG in definition. (AM_CFLAGS): Include CPICFLAG in definition. (AM_CXXFLAGS): Include CXXPICFLAG in definition. * libgui/module.mk: Use MOCFLAGS, UICFLAGS, RCCFLAGS, and LRELEASEFLAGS in MOC, UIC, RCC, and LRELEASE commands. * acinclude.m4: Add CXXPICFLAG to CXXFLAGS in Qt tests. (OCTAVE_CHECK_QSCINTILLA_VERSION): Rename from OCTAVE_CHECK_VERSION_2_6_0. (OCTAVE_CHECK_QT_VERSION, OCTAVE_CHECK_QT): New macros extracted from configure.ac. * configure.ac: Move checks for shared vs. static libraries earlier in file. Allow checking for multiple versions of Qt libraries. Report MOC, UIC, RCC, and LRELEASE in summary.

gnulib = http://hg.octave.org/gnulib